API updates for May 4, 2009

[Ryan Snyder]

Here are the API updates for May 4, 2009:

* Fixed: PUT /places/{places_key}/leave allowed a person to leave a
place they were not currently at.
* Fixed: PUT /places/{places_key}/leave was not returning the Shout
object.
* Fixed: PUT /places/{places_key}/shout was not returning the Shout
object.
* Added: GET /places?favorites=true now supports the 'who' parameter.
* Added: GET /places?popular=true now supports the 'who' parameter.
* Added: GET /places?populated=true now supports the 'who' parameter.
* Added: Shout objects now include 'is_listening', 'is_listener' and
'is_person'.
* Changed: PUT /places/add now supports the 'places_tags' instead of
the 'tags' parameter.
* Changed: PUT /places/{places_key}/edit now supports the
'places_tags' instead of the 'tags' parameter.

Special thanks to Don Park and Peter Cowan for their feedback, which
resulted in some of the updates listed above.